一種短期體外循環(huán)支持系統(tǒng)能夠經(jīng)由皮膚心臟導(dǎo)管手術(shù)，在30分鐘內(nèi)提供心臟輔助支持功能。

TandemHeart經(jīng)由皮膚跨隔膜心室輔助(PTVA)系統(tǒng)是一種左心室輔助設(shè)備(LVAD)，設(shè)計(jì)作為短期循環(huán)支持系統(tǒng)，不需要徹底的心肺通路手術(shù)。該系統(tǒng)由三個(gè)部分組成:TandemHeart泵，提供循環(huán)動(dòng)力將氧合血液從左心房中抽吸出來(lái)，推進(jìn)至全身動(dòng)脈循環(huán)系統(tǒng)；TandemHeart套管組件，將泵通過(guò)2條經(jīng)皮膚通路腹股溝穿刺點(diǎn)連接起來(lái);TandemHeart控制器，為泵提供動(dòng)力，為泵提供潤(rùn)滑劑，自動(dòng)系統(tǒng)監(jiān)測(cè)需要引起注意的情況并發(fā)出警報(bào)。

一種近期投入使用的重量很輕節(jié)約空間的輔助控制器，能夠配備在床邊輸液架或者桌子上。該設(shè)備主要適用于交流電源(AC)，但是配備的電池儲(chǔ)備電源足夠使用1小時(shí)。TandemHeart PTVA系統(tǒng)是美國(guó)CardiacAssist公司(Pittsburgh, PA, USA)產(chǎn)品，已經(jīng)獲得美國(guó)食品藥品管理(FDA)批準(zhǔn)，在6小時(shí)之內(nèi)短期應(yīng)用。
 
The TandemHeart PTVA System
 
A short-term extracorporeal circulatory support system provides cardiac assistance through a percutaneous cardiac catheterization procedure in as little as 30 minutes.

The TandemHeart percutaneous transseptal ventricular assist (PTVA) system is a left ventricular assist device (LVAD) designed to be used as a short-term circulatory support system for procedures not requiring complete cardiopulmonary bypass. The system is comprised of three elements: The TandemHeart pump provides the circulating power to pull oxygenated blood from the left atrium and to return it to the systemic arterial circulation; the TandemHeart cannula set connects the pump to the body by way of two percutaneous access points in the patient's groin; and the TandemHeart controller provides operating power to the pump, a controlled flow of lubricant to the pump, and automatic system monitoring and alarms indicating conditions that require attention.

A recently introduced lightweight, space-saving escort controller is also available, which can be mounted at bedside, on an intravenous (IV) pole, or on a table top. It is intended primarily for alternating current (AC) power use, but has enough battery back-up power for an hour of operation. The TandemHeart PTVA system is a product of CardiacAssist (Pittsburgh, PA, USA), and has been approved by the U.S. Food and Drug Administration (FDA) for short-term use for up to six hours.